不同体位着陆冲击时人体的动态响应  

Human Dynamic Response to Landing Impact in Selected Body Orientations

作　　者：刘炳坤[1] 王宪民[1] 王玉兰[1] 姜世忠[1] 

机构地区：[1]航天医学工程研究所,北京100094

出　　处：《航天医学与医学工程》2001年第2期120-122,共3页Space Medicine & Medical Engineering

摘　　要：目的探讨不同体位着陆冲击时人体动态响应的变化。方法 5名健康男青年 ,承受峰值 1 0G ,作用时间为 50ms的半正弦脉冲的着陆冲击 ,冲击方向与人体纵轴的夹角 (体位角 )从 30°～ 70°间隔 1 0°增加 ,分别在人体头、肩、胸、髂部安装二维加速度计记录人体的动态响应。结果在本实验条件下 ,人体头Z向 (头盆向 )响应在 50°角时达最小 ,其值为 1 0 .36± 2 .44G ;在 70°角时响应达最大 ,其值为 1 8.0 7± 3.2 9G。胸Z向响应在 70°时达最小 ,其值为 1 0 .39± 3.97G ;在 60°时达最大 ,其值为 1 5.42± 3.61G。头X向 (胸背向 )响应在 30°时达最小 ,其值为 7.58± 1 .1 8G ;在 70°时响应达最大 ,其值为 1 8.89± 1 .85G。胸X向响应在 30°达最小 ,其值为 7.2 1± 1 .99G ;在 70°角时响应达最大 ,其值为 1 7.67± 2 .1 6G。结论在本实验条件下 ,人体对抗着陆冲击的最佳体位角为 50°。Objective To study changes of human dynamic response to landing impact in selected body orientations. Method Five healthy young men were exposed to 10 G,50 ms half sine acceleration pulses . The angle included between human head ilium axis and impact force direction was 30°~70° . The acceleration responses at head, shoulder, chest and ilium of the subjects were recorded along head ilium and chest back directions. Result Within limits of the experiments, the minimum peak response at the head along head ilium direction was 10.36±2.44 G at 50° , and the maximum was 18.07±3.29 G at 70°. The minimum peak response at the chest along head ilium direction was 10.39±3.97 G at 70°, and the maximum was 15.42± 3.61 G at 60°. The minimum peak response at the head along chest back direction was 7.58±1.18 G at 30°, and the maximum was 18.89±1.85 G at 70°. The minimum peak response at the chest along chest back direction was 7.21±1.99 G at 30° , and the maximum was 17.67±2.16 G at 70°. Conclusion It was inferred that the best body orientation angle for landing impact might be 50°.

关 键 词：载人航天 着陆冲击 动态响应 

分 类 号：R852.25[医药卫生—航空、航天与航海医学]